Zimbra Tips and Tricks

Zimbra has became a very popular email server solution now-a-days. It has some amazing features for which an administrator cannot avoid it.

When a mail server works in a production environment it needs some tuning to serve its clients in a flawless manner. Here are some of them. The below commands fully functional with Zimbra 8.6 Version.

To check mail queue:
Option 1:
Login to Web Administration >> Monitor >> Mail Queue

Option 2:
Login to Shell >> su zimbra >> mailq


Remove all mails from mail queue:
Login to Shell >> /opt/zimbra/postfix/sbin/postsuper -d ALL


Clear / Remove all mails from a user's mailbox:
Login to Shell >> su zimbra >> zmmailbox -z -m user@yourdomain.com emptyFolder /Inbox


Set external relay MTA(Entire emails):
Login to Shell >> su zimbra >>zmprov ms mail.yourdomain.com zimbraMtaRelayHost mail.external.com:25 >> zmcontrol restart


Remove external relay MTA:
Login to Shell >> su zimbra >> zmprov mcf zimbraMtaRelayHost "" >> >> zmcontrol restart